There's been four Ms. Marvels, apparently. Though Carol Danvers was the original Ms. Marvel until 2012 when she ended up assuming the moniker of Captain Marvel. Kamala Khan herself is the current Ms. Marvel, and idolized Carol Danvers. Due to an incident that occured, Kamala gained the powers to shapeshift, which includes being able to change the size of her body/bodyparts, stretch her body, and change her appearance along with fast healing.